summaryrefslogtreecommitdiffstats
path: root/3rd_party/collectd-ves-app/ves_app/ves_app.py
blob: 49e7635a7f4b83f983ea4921041ccaf8a1072943 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
#!/usr/bin/env python
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import json
import sys
import base64
import ConfigParser
import logging
import argparse

from distutils.util import strtobool
from kafka import KafkaConsumer

try:
    # For Python 3.0 and later
    import urllib.request as url
except ImportError:
    # Fall back to Python 2's urllib2
    import urllib2 as url
import socket
import time
from threading import Timer
from threading import Lock


class Event(object):
    """Event header"""

    def __init__(self):
        """Construct the common header"""
        self.version = 2.0
        self.event_type = "Info"  # use "Info" unless a notification is generated
        self.domain = ""
        self.event_id = ""
        self.source_id = ""
        self.source_name = ""
        self.functional_role = ""
        self.reporting_entity_id = ""
        self.reporting_entity_name = ""
        self.priority = "Normal"  # will be derived from event if there is one
        self.start_epoch_microsec = 0
        self.last_epoch_micro_sec = 0
        self.sequence = 0
        self.event_name = ""
        self.internal_header_fields = {}
        self.nfc_naming_code = ""
        self.nf_naming_code = ""

    def get_json(self):
        """Get the object of the datatype"""
        obj = {}
        obj['version'] = self.version
        obj['eventType'] = self.event_type
        obj['domain'] = self.domain
        obj['eventId'] = self.event_id
        obj['sourceId'] = self.source_id
        obj['sourceName'] = self.source_name
        obj['reportingEntityId'] = self.reporting_entity_id
        obj['reportingEntityName'] = self.reporting_entity_name
        obj['priority'] = self.priority
        obj['startEpochMicrosec'] = self.start_epoch_microsec
        obj['lastEpochMicrosec'] = self.last_epoch_micro_sec
        obj['sequence'] = self.sequence
        obj['eventName'] = self.event_name
        obj['internalHeaderFields'] = self.internal_header_fields
        obj['nfcNamingCode'] = self.nfc_naming_code
        obj['nfNamingCode'] = self.nf_naming_code
        return json.dumps({
            'event': {
                'commonEventHeader': obj,
                self.get_name(): self.get_obj()
            }
        }).encode()

    def get_name():
        assert False, 'abstract method get_name() is not implemented'

    def get_obj():
        assert False, 'abstract method get_obj() is not implemented'


class Field(object):
    """field datatype"""

    def __init__(self, name, value):
        self.name = name
        self.value = value

    def get_obj(self):
        return {
            'name': self.name,
            'value': self.value
        }


class NamedArrayOfFields(object):
    """namedArrayOfFields datatype"""

    def __init__(self, name):
        self.name = name
        self.array_of_fields = []

    def add(self, field):
        self.array_of_fields.append(field.get_obj())

    def get_obj(self):
        return {
            'name': self.name,
            'arrayOfFields': self.array_of_fields
        }


class VESDataType(object):
    """ Base VES datatype """

    def set_optional(self, obj, key, val):
        if val is not None:
            obj[key] = val


class DiskUsage(VESDataType):
    """diskUsage datatype"""

    def __init__(self, identifier):
        self.disk_identifier = identifier
        self.disk_io_time_avg = None
        self.disk_io_time_last = None
        self.disk_io_time_max = None
        self.disk_io_time_min = None
        self.disk_merged_read_avg = None
        self.disk_merged_read_last = None
        self.disk_merged_read_max = None
        self.disk_merged_read_min = None
        self.disk_merged_write_avg = None
        self.disk_merged_write_last = None
        self.disk_merged_write_max = None
        self.disk_merged_write_min = None
        self.disk_octets_read_avg = None
        self.disk_octets_read_last = None
        self.disk_octets_read_max = None
        self.disk_octets_read_min = None
        self.disk_octets_write_avg = None
        self.disk_octets_write_last = None
        self.disk_octets_write_max = None
        self.disk_octets_write_min = None
        self.disk_ops_read_avg = None
        self.disk_ops_read_last = None
        self.disk_ops_read_max = None
        self.disk_ops_read_min = None
        self.disk_ops_write_avg = None
        self.disk_ops_write_last = None
        self.disk_ops_write_max = None
        self.disk_ops_write_min = None
        self.disk_pending_operations_avg = None
        self.disk_pending_operations_last = None
        self.disk_pending_operations_max = None
        self.disk_pending_operations_min = None
        self.disk_time_read_avg = None
        self.disk_time_read_last = None
        self.disk_time_read_max = None
        self.disk_time_read_min = None
        self.disk_time_write_avg = None
        self.disk_time_write_last = None
        self.disk_time_write_max = None
        self.disk_time_write_min = None

    def get_obj(self):
        obj = {
            # required
            'diskIdentifier': self.disk_identifier
        }
        self.set_optional(obj, 'diskIoTimeAvg', self.disk_io_time_avg)
        self.set_optional(obj, 'diskIoTimeLast', self.disk_io_time_last)
        self.set_optional(obj, 'diskIoTimeMax', self.disk_io_time_max)
        self.set_optional(obj, 'diskIoTimeMin', self.disk_io_time_min)
        self.set_optional(obj, 'diskMergedReadAvg', self.disk_merged_read_avg)
        self.set_optional(obj, 'diskMergedReadLast', self.disk_merged_read_last)
        self.set_optional(obj, 'diskMergedReadMax', self.disk_merged_read_max)
        self.set_optional(obj, 'diskMergedReadMin', self.disk_merged_read_min)
        self.set_optional(obj, 'diskMergedWriteAvg', self.disk_merged_write_avg)
        self.set_optional(obj, 'diskMergedWriteLast', self.disk_merged_write_last)
        self.set_optional(obj, 'diskMergedWriteMax', self.disk_merged_write_max)
        self.set_optional(obj, 'diskMergedWriteMin', self.disk_merged_write_min)
        self.set_optional(obj, 'diskOctetsReadAvg', self.disk_octets_read_avg)
        self.set_optional(obj, 'diskOctetsReadLast', self.disk_octets_read_last)
        self.set_optional(obj, 'diskOctetsReadMax', self.disk_octets_read_max)
        self.set_optional(obj, 'diskOctetsReadMin', self.disk_octets_read_min)
        self.set_optional(obj, 'diskOctetsWriteAvg', self.disk_octets_write_avg)
        self.set_optional(obj, 'diskOctetsWriteLast', self.disk_octets_write_last)
        self.set_optional(obj, 'diskOctetsWriteMax', self.disk_octets_write_max)
        self.set_optional(obj, 'diskOctetsWriteMin', self.disk_octets_write_min)
        self.set_optional(obj, 'diskOpsReadAvg', self.disk_ops_read_avg)
        self.set_optional(obj, 'diskOpsReadLast', self.disk_ops_read_last)
        self.set_optional(obj, 'diskOpsReadMax', self.disk_ops_read_max)
        self.set_optional(obj, 'diskOpsReadMin', self.disk_ops_read_min)
        self.set_optional(obj, 'diskOpsWriteAvg', self.disk_ops_write_avg)
        self.set_optional(obj, 'diskOpsWriteLast', self.disk_ops_write_last)
        self.set_optional(obj, 'diskOpsWriteMax', self.disk_ops_write_max)
        self.set_optional(obj, 'diskOpsWriteMin', self.disk_ops_write_min)
        self.set_optional(obj, 'diskPendingOperationsAvg', self.disk_pending_operations_avg)
        self.set_optional(obj, 'diskPendingOperationsLast', self.disk_pending_operations_last)
        self.set_optional(obj, 'diskPendingOperationsMax', self.disk_pending_operations_max)
        self.set_optional(obj, 'diskPendingOperationsMin', self.disk_pending_operations_min)
        self.set_optional(obj, 'diskTimeReadAvg', self.disk_time_read_avg)
        self.set_optional(obj, 'diskTimeReadLast', self.disk_time_read_last)
        self.set_optional(obj, 'diskTimeReadMax', self.disk_time_read_max)
        self.set_optional(obj, 'diskTimeReadMin', self.disk_time_read_min)
        self.set_optional(obj, 'diskTimeWriteAvg', self.disk_time_write_avg)
        self.set_optional(obj, 'diskTimeWriteLast', self.disk_time_write_last)
        self.set_optional(obj, 'diskTimeWriteMax', self.disk_time_write_max)
        self.set_optional(obj, 'diskTimeWriteMin', self.disk_time_write_min)
        return obj


class VNicPerformance(VESDataType):
    """vNicPerformance datatype"""

    def __init__(self, identifier):
        self.received_broadcast_packets_accumulated = None
        self.received_broadcast_packets_delta = None
        self.received_discarded_packets_accumulated = None
        self.received_discarded_packets_delta = None
        self.received_error_packets_accumulated = None
        self.received_error_packets_delta = None
        self.received_multicast_packets_accumulated = None
        self.received_multicast_packets_delta = None
        self.received_octets_accumulated = None
        self.received_octets_delta = None
        self.received_total_packets_accumulated = None
        self.received_total_packets_delta = None
        self.received_unicast_packets_accumulated = None
        self.received_unicast_packets_delta = None
        self.transmitted_broadcast_packets_accumulated = None
        self.transmitted_broadcast_packets_delta = None
        self.transmitted_discarded_packets_accumulated = None
        self.transmitted_discarded_packets_delta = None
        self.transmitted_error_packets_accumulated = None
        self.transmitted_error_packets_delta = None
        self.transmitted_multicast_packets_accumulated = None
        self.transmitted_multicast_packets_delta = None
        self.transmitted_octets_accumulated = None
        self.transmitted_octets_delta = None
        self.transmitted_total_packets_accumulated = None
        self.transmitted_total_packets_delta = None
        self.transmitted_unicast_packets_accumulated = None
        self.transmitted_unicast_packets_delta = None
        self.values_are_suspect = 'true'
        self.v_nic_identifier = identifier

    def get_obj(self):
        obj = {
            # required
            'valuesAreSuspect': self.values_are_suspect,
            'vNicIdentifier': self.v_nic_identifier
        }
        # optional
        self.set_optional(obj, 'receivedBroadcastPacketsAccumulated', self.received_broadcast_packets_accumulated)
        self.set_optional(obj, 'receivedBroadcastPacketsDelta', self.received_broadcast_packets_delta)
        self.set_optional(obj, 'receivedDiscardedPacketsAccumulated', self.received_discarded_packets_accumulated)
        self.set_optional(obj, 'receivedDiscardedPacketsDelta', self.received_discarded_packets_delta)
        self.set_optional(obj, 'receivedErrorPacketsAccumulated', self.received_error_packets_accumulated)
        self.set_optional(obj, 'receivedErrorPacketsDelta', self.received_error_packets_delta)
        self.set_optional(obj, 'receivedMulticastPacketsAccumulated', self.received_multicast_packets_accumulated)
        self.set_optional(obj, 'receivedMulticastPacketsDelta', self.received_multicast_packets_delta)
        self.set_optional(obj, 'receivedOctetsAccumulated', self.received_octets_accumulated)
        self.set_optional(obj, 'receivedOctetsDelta', self.received_octets_delta)
        self.set_optional(obj, 'receivedTotalPacketsAccumulated', self.received_total_packets_accumulated)
        self.set_optional(obj, 'receivedTotalPacketsDelta', self.received_total_packets_delta)
        self.set_optional(obj, 'receivedUnicastPacketsAccumulated', self.received_unicast_packets_accumulated)
        self.set_optional(obj, 'receivedUnicastPacketsDelta', self.received_unicast_packets_delta)
        self.set_optional(obj, 'transmittedBroadcastPacketsAccumulated', self.transmitted_broadcast_packets_accumulated)
        self.set_optional(obj, 'transmittedBroadcastPacketsDelta', self.transmitted_broadcast_packets_delta)
        self.set_optional(obj, 'transmittedDiscardedPacketsAccumulated', self.transmitted_discarded_packets_accumulated)
        self.set_optional(obj, 'transmittedDiscardedPacketsDelta', self.transmitted_discarded_packets_delta)
        self.set_optional(obj, 'transmittedErrorPacketsAccumulated', self.transmitted_error_packets_accumulated)
        self.set_optional(obj, 'transmittedErrorPacketsDelta', self.transmitted_error_packets_delta)
        self.set_optional(obj, 'transmittedMulticastPacketsAccumulated', self.transmitted_multicast_packets_accumulated)
        self.set_optional(obj, 'transmittedMulticastPacketsDelta', self.transmitted_multicast_packets_delta)
        self.set_optional(obj, 'transmittedOctetsAccumulated', self.transmitted_octets_accumulated)
        self.set_optional(obj, 'transmittedOctetsDelta', self.transmitted_octets_delta)
        self.set_optional(obj, 'transmittedTotalPacketsAccumulated', self.transmitted_total_packets_accumulated)
        self.set_optional(obj, 'transmittedTotalPacketsDelta', self.transmitted_total_packets_delta)
        self.set_optional(obj, 'transmittedUnicastPacketsAccumulated', self.transmitted_unicast_packets_accumulated)
        self.set_optional(obj, 'transmittedUnicastPacketsDelta', self.transmitted_unicast_packets_delta)
        return obj


class CpuUsage(VESDataType):
    """cpuUsage datatype"""

    def __init__(self, identifier):
        self.cpu_identifier = identifier
        self.cpu_idle = None
        self.cpu_usage_interrupt = None
        self.cpu_usage_nice = None
        self.cpu_usage_soft_irq = None
        self.cpu_usage_steal = None
        self.cpu_usage_system = None
        self.cpu_usage_user = None
        self.cpu_wait = None
        self.percent_usage = 0

    def get_obj(self):
        obj = {
            # required
            'cpuIdentifier': self.cpu_identifier,
            'percentUsage': self.percent_usage
        }
        # optional
        self.set_optional(obj, 'cpuIdle', self.cpu_idle)
        self.set_optional(obj, 'cpuUsageInterrupt', self.cpu_usage_interrupt)
        self.set_optional(obj, 'cpuUsageNice', self.cpu_usage_nice)
        self.set_optional(obj, 'cpuUsageSoftIrq', self.cpu_usage_soft_irq)
        self.set_optional(obj, 'cpuUsageSteal', self.cpu_usage_steal)
        self.set_optional(obj, 'cpuUsageSystem', self.cpu_usage_system)
        self.set_optional(obj, 'cpuUsageUser', self.cpu_usage_user)
        self.set_optional(obj, 'cpuWait', self.cpu_wait)
        return obj


class MemoryUsage(VESDataType):
    """memoryUsage datatype"""

    def __init__(self, identifier):
        self.memory_buffered = None
        self.memory_cached = None
        self.memory_configured = None
        self.memory_free = None
        self.memory_slab_recl = None
        self.memory_slab_unrecl = None
        self.memory_used = None
        self.vm_identifier = identifier

    def __str__(self):
        """ for debug purposes """
        return 'vm_identifier : {vm_identifier}\nbuffered : {buffered}\n' \
               'cached : {cached}\nconfigured : {configured}\nfree : {free}\n' \
               'slab_recl : {slab_recl}\nslab_unrecl : {slab_unrecl}\n' \
               'used : {used}\n'.format(buffered=self.memory_buffered,
                                        cached=self.memory_cached, configured=self.memory_configured,
                                        free=self.memory_free, slab_recl=self.memory_slab_recl,
                                        slab_unrecl=self.memory_slab_unrecl, used=self.memory_used,
                                        vm_identifier=self.vm_identifier)

    def get_memory_free(self):
        if self.memory_free is None:
            # calculate the free memory
            if None not in (self.memory_configured, self.memory_used):
                return self.memory_configured - self.memory_used
            else:
                # required field, so return zero
                return 0
        else:
            return self.memory_free

    def get_memory_used(self):
        if self.memory_used is None:
            # calculate the memory used
            if None not in (self.memory_configured, self.memory_free, self.memory_buffered,
                            self.memory_cached, self.memory_slab_recl, self.memory_slab_unrecl):
                return self.memory_configured - (self.memory_free +
                                                 self.memory_buffered + self.memory_cached +
                                                 self.memory_slab_recl + self.memory_slab_unrecl)
            else:
                # required field, so return zero
                return 0
        else:
            return self.memory_used

    def get_memory_total(self):
        if self.memory_configured is None:
            # calculate the total memory
            if None not in (self.memory_used, self.memory_free, self.memory_buffered,
                            self.memory_cached, self.memory_slab_recl, self.memory_slab_unrecl):
                return (self.memory_used + self.memory_free +
                        self.memory_buffered + self.memory_cached +
                        self.memory_slab_recl + self.memory_slab_unrecl)
            else:
                return None
        else:
            return self.memory_configured

    def get_obj(self):
        obj = {
            # required fields
            'memoryFree': self.get_memory_free(),
            'memoryUsed': self.get_memory_used(),
            'vmIdentifier': self.vm_identifier
        }
        # optional fields
        self.set_optional(obj, 'memoryBuffered', self.memory_buffered)
        self.set_optional(obj, 'memoryCached', self.memory_cached)
        self.set_optional(obj, 'memoryConfigured', self.memory_configured)
        self.set_optional(obj, 'memorySlabRecl', self.memory_slab_recl)
        self.set_optional(obj, 'memorySlabUnrecl', self.memory_slab_unrecl)
        return obj


class MeasurementsForVfScaling(Event):
    """MeasurementsForVfScaling datatype"""

    def __init__(self, event_id):
        """Construct the header"""
        super(MeasurementsForVfScaling, self).__init__()
        # common attributes
        self.domain = "measurementsForVfScaling"
        self.event_type = 'hostOS'
        self.event_id = event_id
        # measurement attributes
        self.additional_measurements = []
        self.codec_usage_array = []
        self.concurrent_sessions = 0
        self.configured_entities = 0
        self.cpu_usage_array = []
        self.feature_usage_array = []
        self.filesystem_usage_array = []
        self.latency_distribution = []
        self.mean_request_latency = 0
        self.measurement_interval = 0
        self.number_of_media_ports_in_use = 0
        self.request_rate = 0
        self.vnfc_scaling_metric = 0
        self.additional_fields = []
        self.additional_objects = []
        self.disk_usage_array = []
        self.measurements_for_vf_scaling_version = 2.0
        self.memory_usage_array = []
        self.v_nic_performance_array = []

    def add_additional_measurement(self, named_array):
        self.additional_measurements.append(named_array.get_obj())

    def add_additional_fields(self, field):
        self.additional_fields.append(field.get_obj())

    def add_memory_usage(self, mem_usage):
        self.memory_usage_array.append(mem_usage.get_obj())

    def add_cpu_usage(self, cpu_usage):
        self.cpu_usage_array.append(cpu_usage.get_obj())

    def add_v_nic_performance(self, nic_performance):
        self.v_nic_performance_array.append(nic_performance.get_obj())

    def add_disk_usage(self, disk_usage):
        self.disk_usage_array.append(disk_usage.get_obj())

    def get_obj(self):
        """Get the object of the datatype"""
        obj = {}
        obj['additionalMeasurements'] = self.additional_measurements
        obj['codecUsageArray'] = self.codec_usage_array
        obj['concurrentSessions'] = self.concurrent_sessions
        obj['configuredEntities'] = self.configured_entities
        obj['cpuUsageArray'] = self.cpu_usage_array
        obj['featureUsageArray'] = self.feature_usage_array
        obj['filesystemUsageArray'] = self.filesystem_usage_array
        obj['latencyDistribution'] = self.latency_distribution
        obj['meanRequestLatency'] = self.mean_request_latency
        obj['measurementInterval'] = self.measurement_interval
        obj['numberOfMediaPortsInUse'] = self.number_of_media_ports_in_use
        obj['requestRate'] = self.request_rate
        obj['vnfcScalingMetric'] = self.vnfc_scaling_metric
        obj['additionalFields'] = self.additional_fields
        obj['additionalObjects'] = self.additional_objects
        obj['diskUsageArray'] = self.disk_usage_array
        obj['measurementsForVfScalingVersion'] = self.measurements_for_vf_scaling_version
        obj['memoryUsageArray'] = self.memory_usage_array
        obj['vNicPerformanceArray'] = self.v_nic_performance_array
        return obj

    def get_name(self):
        """Name of datatype"""
        return "measurementsForVfScalingFields"


class Fault(Event):
    """Fault datatype"""

    def __init__(self, event_id):
        """Construct the header"""
        super(Fault, self).__init__()
        # common attributes
        self.domain = "fault"
        self.event_id = event_id
        self.event_type = "Fault"
        # fault attributes
        self.fault_fields_version = 1.1
        self.event_severity = 'NORMAL'
        self.event_source_type = 'other(0)'
        self.alarm_condition = ''
        self.specific_problem = ''
        self.vf_status = 'Active'
        self.alarm_interface_a = ''
        self.alarm_additional_information = []
        self.event_category = ""

    def get_name(self):
        """Name of datatype"""
        return 'faultFields'

    def get_obj(self):
        """Get the object of the datatype"""
        obj = {}
        obj['faultFieldsVersion'] = self.fault_fields_version
        obj['eventSeverity'] = self.event_severity
        obj['eventSourceType'] = self.event_source_type
        obj['alarmCondition'] = self.alarm_condition
        obj['specificProblem'] = self.specific_problem
        obj['vfStatus'] = self.vf_status
        obj['alarmInterfaceA'] = self.alarm_interface_a
        obj['alarmAdditionalInformation'] = self.alarm_additional_information
        obj['eventCategory'] = self.event_category
        return obj


class VESApp(object):
    """VES Application"""

    def __init__(self):
        """Application initialization"""
        self.__plugin_data_cache = {
            'cpu': {'interval': 0.0, 'vls': []},
            'virt': {'interval': 0.0, 'vls': []},
            'disk': {'interval': 0.0, 'vls': []},
            'interface': {'interval': 0.0, 'vls': []},
            'memory': {'interval': 0.0, 'vls': []}
        }
        self.__app_config = {
            'Domain': '127.0.0.1',
            'Port': 30000,
            'Path': '',
            'Username': '',
            'Password': '',
            'Topic': '',
            'UseHttps': False,
            'SendEventInterval': 20.0,
            'FunctionalRole': 'Collectd VES Agent',
            'ApiVersion': 5.1,
            'KafkaPort': 9092,
            'KafkaBroker': 'localhost'
        }
        self.__host_name = None
        self.__ves_timer = None
        self.__lock = Lock()
        self.__event_id = 0

    def get_event_id(self):
        """get event id"""
        self.__event_id += 1
        return str(self.__event_id)

    def lock(self):
        """Lock the application"""
        self.__lock.acquire()

    def unlock(self):
        """Unlock the application"""
        self.__lock.release()

    def start_timer(self):
        """Start event timer"""
        self.__ves_timer = Timer(self.__app_config['SendEventInterval'], self.__on_time)
        self.__ves_timer.start()

    def stop_timer(self):
        """Stop event timer"""
        self.__ves_timer.cancel()

    def __on_time(self):
        """Timer thread"""
        self.event_timer()
        self.start_timer()

    def event_send(self, event):
        """Send event to VES"""
        server_url = "http{}://{}:{}{}/eventListener/v{}{}".format(
            's' if self.__app_config['UseHttps'] else '', self.__app_config['Domain'],
            int(self.__app_config['Port']), '{}'.format(
                '/{}'.format(self.__app_config['Path']) if (len(self.__app_config['Path']) > 0) else ''),
            int(self.__app_config['ApiVersion']), '{}'.format(
                '/{}'.format(self.__app_config['Topic']) if (len(self.__app_config['Topic']) > 0) else ''))
        logging.info('Vendor Event Listener is at: {}'.format(server_url))
        credentials = base64.b64encode('{}:{}'.format(
            self.__app_config['Username'], self.__app_config['Password']).encode()).decode()
        logging.info('Authentication credentials are: {}'.format(credentials))
        try:
            request = url.Request(server_url)
            request.add_header('Authorization', 'Basic {}'.format(credentials))
            request.add_header('Content-Type', 'application/json')
            logging.debug("Sending {} to {}".format(event.get_json(), server_url))
            vel = url.urlopen(request, event.get_json(), timeout=1)
            logging.debug("Sent data to {} successfully".format(server_url))
        except url.HTTPError as e:
            logging.error('Vendor Event Listener exception: {}'.format(e))
        except url.URLError as e:
            logging.error('Vendor Event Listener is is not reachable: {}'.format(e))
        except Exception as e:
            logging.error('Vendor Event Listener error: {}'.format(e))

    def bytes_to_kb(self, bytes):
        """Convert bytes to kibibytes"""
        return round((bytes / 1024.0), 3)

    def get_hostname(self):
        return socket.gethostname()

    def send_host_measurements(self):
        # get list of all VMs
        virt_vcpu_total = self.cache_get_value(plugin_name='virt', type_name='virt_cpu_total',
                                               mark_as_read=False)
        vm_names = [x['plugin_instance'] for x in virt_vcpu_total]
        for vm_name in vm_names:
            # make sure that 'virt' plugin cache is up-to-date
            vm_values = self.cache_get_value(plugin_name='virt', plugin_instance=vm_name,
                                             mark_as_read=False)
            us_up_to_date = True
            for vm_value in vm_values:
                if vm_value['updated'] == False:
                    logging.warning("%s" % vm_value)
                    us_up_to_date = False
                    break
            if not us_up_to_date:
                # one of the cache value is not up-to-date, break
                logging.warning("virt collectd cache values are not up-to-date for {}".format(vm_name))
                continue
            # values are up-to-date, create an event message
            measurement = MeasurementsForVfScaling(self.get_event_id())
            measurement.functional_role = self.__app_config['FunctionalRole']
            # fill out reporting_entity
            measurement.reporting_entity_id = self.get_hostname()
            measurement.reporting_entity_name = measurement.reporting_entity_id
            # set source as a host value
            measurement.source_id = vm_name
            measurement.source_name = measurement.source_id
            # fill out EpochMicrosec (convert to us)
            measurement.start_epoch_microsec = (virt_vcpu_total[0]['time'] * 1000000)
            # plugin interval
            measurement.measurement_interval = self.__plugin_data_cache['virt']['interval']
            # memoryUsage
            mem_usage = MemoryUsage(vm_name)
            memory_total = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                type_name='memory', type_instance='total')
            memory_unused = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                 type_name='memory', type_instance='unused')
            memory_rss = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                              type_name='memory', type_instance='rss')
            if len(memory_total) > 0:
                mem_usage.memory_configured = self.bytes_to_kb(memory_total[0]['values'][0])
            if len(memory_unused) > 0:
                mem_usage.memory_free = self.bytes_to_kb(memory_unused[0]['values'][0])
            elif len(memory_rss) > 0:
                mem_usage.memory_free = self.bytes_to_kb(memory_rss[0]['values'][0])
            # since, "used" metric is not provided by virt plugn, set the rest of the memory stats
            # to zero to calculate used based on provided stats only
            mem_usage.memory_buffered = mem_usage.memory_cached = mem_usage.memory_slab_recl = \
                mem_usage.memory_slab_unrecl = 0
            measurement.add_memory_usage(mem_usage)
            # cpuUsage
            virt_vcpus = self.cache_get_value(plugin_instance=vm_name,
                                              plugin_name='virt', type_name='virt_vcpu')
            for virt_vcpu in virt_vcpus:
                cpu_usage = CpuUsage(virt_vcpu['type_instance'])
                cpu_usage.percent_usage = self.cpu_ns_to_percentage(virt_vcpu)
                measurement.add_cpu_usage(cpu_usage)
            # vNicPerformance
            if_packets = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                              type_name='if_packets', mark_as_read=False)
            if_names = [x['type_instance'] for x in if_packets]
            for if_name in if_names:
                if_packets = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                  type_name='if_packets', type_instance=if_name)
                if_octets = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                 type_name='if_octets', type_instance=if_name)
                if_errors = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                 type_name='if_errors', type_instance=if_name)
                if_dropped = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                  type_name='if_dropped', type_instance=if_name)
                v_nic_performance = VNicPerformance(if_name)
                v_nic_performance.received_total_packets_accumulated = if_packets[0]['values'][0]
                v_nic_performance.transmitted_total_packets_accumulated = if_packets[0]['values'][1]
                v_nic_performance.received_octets_accumulated = if_octets[0]['values'][0]
                v_nic_performance.transmitted_octets_accumulated = if_octets[0]['values'][1]
                v_nic_performance.received_error_packets_accumulated = if_errors[0]['values'][0]
                v_nic_performance.transmitted_error_packets_accumulated = if_errors[0]['values'][1]
                v_nic_performance.received_discarded_packets_accumulated = if_dropped[0]['values'][0]
                v_nic_performance.transmitted_discarded_packets_accumulated = if_dropped[0]['values'][1]
                measurement.add_v_nic_performance(v_nic_performance)
            # diskUsage
            disk_octets = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                               type_name='disk_octets', mark_as_read=False)
            disk_names = [x['type_instance'] for x in disk_octets]
            for disk_name in disk_names:
                disk_octets = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                   type_name='disk_octets', type_instance=disk_name)
                disk_ops = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                                type_name='disk_ops', type_instance=disk_name)
                disk_usage = DiskUsage(disk_name)
                disk_usage.disk_octets_read_last = disk_octets[0]['values'][0]
                disk_usage.disk_octets_write_last = disk_octets[0]['values'][1]
                disk_usage.disk_ops_read_last = disk_ops[0]['values'][0]
                disk_usage.disk_ops_write_last = disk_ops[0]['values'][1]
                measurement.add_disk_usage(disk_usage)
            # add additional measurements (perf)
            perf_values = self.cache_get_value(plugin_instance=vm_name, plugin_name='virt',
                                               type_name='perf')
            named_array = NamedArrayOfFields('perf')
            for perf in perf_values:
                named_array.add(Field(perf['type_instance'], str(perf['values'][0])))
            measurement.add_additional_measurement(named_array)
            # add host values as additional measurements
            self.set_additional_fields(measurement, exclude_plugins=['virt'])
            # send event to the VES
            self.event_send(measurement)
        if len(vm_names) > 0:
            # mark the additional measurements metrics as read
            self.mark_cache_values_as_read(exclude_plugins=['virt'])

    def event_timer(self):
        """Event timer thread"""
        self.lock()
        try:
            self.send_host_measurements()
        finally:
            self.unlock()

    def mark_cache_values_as_read(self, exclude_plugins=None):
        """mark the cache values as read"""
        for plugin_name in self.__plugin_data_cache.keys():
            if (exclude_plugins != None and plugin_name in exclude_plugins):
                # skip excluded plugins
                continue;
            for val in self.__plugin_data_cache[plugin_name]['vls']:
                val['updated'] = False

    def set_additional_measurements(self, measurement, exclude_plugins=None):
        """Set addition measurement filed with host/guets values"""
        # add host/guest values as additional measurements
        for plugin_name in self.__plugin_data_cache.keys():
            if (exclude_plugins != None and plugin_name in exclude_plugins):
                # skip excluded plugins
                continue;
            for val in self.__plugin_data_cache[plugin_name]['vls']:
                if val['updated']:
                    array_name = self.make_dash_string(plugin_name, val['plugin_instance'],
                                                       val['type_instance'])
                    named_array = NamedArrayOfFields(array_name)

                    for index in range(len(val['dsnames'])):
                        mname = '{}-{}'.format(val['type'], val['dsnames'][index])
                        named_array.add(Field(mname, str(val['values'][index])))
                    measurement.add_additional_measurement(named_array);
                    val['updated'] = False

    def set_additional_fields(self, measurement, exclude_plugins=None):
        # set host values as additional fields
        for plugin_name in self.__plugin_data_cache.keys():
            if (exclude_plugins != None and plugin_name in exclude_plugins):
                # skip excluded plugins
                continue;
            for val in self.__plugin_data_cache[plugin_name]['vls']:
                if val['updated']:
                    name_prefix = self.make_dash_string(plugin_name, val['plugin_instance'],
                                                        val['type_instance'])

                    for index in range(len(val['dsnames'])):
                        field_name = self.make_dash_string(name_prefix, val['type'], val['dsnames'][index])
                        measurement.add_additional_fields(Field(field_name, str(val['values'][index])))

    def cpu_ns_to_percentage(self, vl):
        """Convert CPU usage ns to CPU %"""
        total = vl['values'][0]
        total_time = vl['time']
        pre_total = vl['pre_values'][0]
        pre_total_time = vl['pre_time']
        if (total_time - pre_total_time) == 0:
            # return zero usage if time diff is zero
            return 0.0
        percent = (100.0 * (total - pre_total)) / ((total_time - pre_total_time) * 1000000000.0)
        logging.debug("pre_time={}, pre_value={}, time={}, value={}, cpu={}%".format(
            pre_total_time, pre_total, total_time, total, round(percent, 2)))
        return round(percent, 2)

    def make_dash_string(self, *args):
        """Join non empty strings with dash symbol"""
        return '-'.join(filter(lambda x: len(x) > 0, args))

    def config(self, config):
        """VES option configuration"""
        for key, value in config.items('config'):
            if key in self.__app_config:
                try:
                    if type(self.__app_config[key]) == int:
                        value = int(value)
                    elif type(self.__app_config[key]) == float:
                        value = float(value)
                    elif type(self.__app_config[key]) == bool:
                        value = bool(distutils.util.strtobool(value))

                    if isinstance(value, type(self.__app_config[key])):
                        self.__app_config[key] = value
                    else:
                        logging.error("Type mismatch with %s" % key)
                        sys.exit()
                except ValueError:
                    logging.error("Incorrect value type for %s" % key)
                    sys.exit()
            else:
                logging.error("Incorrect key configuration %s" % key)
                sys.exit()

    def init(self):
        """Initialisation"""
        # start the VES timer
        self.start_timer()

    def update_cache_value(self, kafka_data):
        """Update value internal collectd cache values or create new one
         Please note, the cache should be locked before using this function"""
        found = False
        if kafka_data['plugin'] not in self.__plugin_data_cache:
            self.__plugin_data_cache[kafka_data['plugin']] = {'vls': []}
        plugin_vl = self.__plugin_data_cache[kafka_data['plugin']]['vls']

        for index in range(len(plugin_vl)):
            # record found, so just update time the values
            if (plugin_vl[index]['plugin_instance'] == kafka_data['plugin_instance']) and \
                    (plugin_vl[index]['type_instance'] == kafka_data['type_instance']) and \
                    (plugin_vl[index]['type'] == kafka_data['type']):
                plugin_vl[index]['pre_time'] = plugin_vl[index]['time']
                plugin_vl[index]['time'] = kafka_data['time']
                plugin_vl[index]['pre_values'] = plugin_vl[index]['values']
                plugin_vl[index]['values'] = kafka_data['values']
                plugin_vl[index]['dsnames'] = kafka_data['dsnames']
                plugin_vl[index]['updated'] = True
                found = True
                break
        if not found:
            value = {}
            # create new cache record
            value['plugin_instance'] = kafka_data['plugin_instance']
            value['type_instance'] = kafka_data['type_instance']
            value['values'] = kafka_data['values']
            value['pre_values'] = kafka_data['values']
            value['type'] = kafka_data['type']
            value['time'] = kafka_data['time']
            value['pre_time'] = kafka_data['time']
            value['host'] = kafka_data['host']
            value['dsnames'] = kafka_data['dsnames']
            value['updated'] = True
            self.__plugin_data_cache[kafka_data['plugin']]['vls'].append(value)
            # update plugin interval based on one received in the value
            self.__plugin_data_cache[kafka_data['plugin']]['interval'] = kafka_data['interval']

    def cache_get_value(self, plugin_name=None, plugin_instance=None,
                        type_name=None, type_instance=None, type_names=None, mark_as_read=True):
        """Get cache value by given criteria"""
        ret_list = []
        if plugin_name in self.__plugin_data_cache:
            for val in self.__plugin_data_cache[plugin_name]['vls']:
                if (type_name == None or type_name == val['type']) and \
                        (plugin_instance == None or plugin_instance == val['plugin_instance']) and \
                        (type_instance == None or type_instance == val['type_instance']) and \
                        (type_names == None or val['type'] in type_names):
                    if mark_as_read:
                        val['updated'] = False
                    ret_list.append(val)
        return ret_list

    def shutdown(self):
        """Shutdown method for clean up"""
        self.stop_timer()

    def run(self):
        """Consumer JSON data from kafka broker"""
        kafka_server = '%s:%s' % (self.__app_config.get('KafkaBroker'), self.__app_config.get('KafkaPort'))
        consumer = KafkaConsumer('collectd', bootstrap_servers=kafka_server, auto_offset_reset='latest',
                                 enable_auto_commit=False,
                                 value_deserializer=lambda m: json.loads(m.decode('ascii')))

        for message in consumer:
            for kafka_data in message.value:
                self.lock()
                try:
                    # Receive Kafka data and update cache values
                    self.update_cache_value(kafka_data)

                finally:
                    self.unlock()


def main():
    # Parsing cmdline options
    parser = argparse.ArgumentParser()
    parser.add_argument("--config", dest="configfile", default=None, help="Specify config file", metavar="FILE")
    parser.add_argument("--loglevel", dest="level", choices=['DEBUG', 'INFO', 'WARNING', 'ERROR'], default='WARNING',
                        help="Specify log level (default: %(default)s)", metavar="LEVEL")
    parser.add_argument("--logfile", dest="logfile", default='ves_app.log',
                        help="Specify log file (default: %(default)s)", metavar="FILE")
    args = parser.parse_args()

    # Create log file
    logging.basicConfig(filename=args.logfile, format='%(asctime)s %(message)s', level=args.level)

    # Create Application Instance
    application_instance = VESApp()

    # Read from config file
    if args.configfile:
        config = ConfigParser.ConfigParser()
        config.optionxform = lambda option: option
        config.read(args.configfile)
        # Write Config Values
        application_instance.config(config)
    else:
        logging.warning("No configfile specified, using default options")

    # Start timer for interval
    application_instance.init()

    # Read Data from Kakfa
    try:
        # Kafka consumer & update cache
        application_instance.run()
    except KeyboardInterrupt:
        logging.info(" - Ctrl-C handled, exiting gracefully")
        application_instance.shutdown()
        sys.exit()
    except:
        logging.error("Unknown Error")


if __name__ == '__main__':
    main()